2041 lines
51 KiB
C
2041 lines
51 KiB
C
/* A -*- C -*- header file for the bfd library
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Copyright 1990, 1991 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of BFD, the Binary File Diddler.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* bfd.h -- The only header file required by users of the bfd library
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This file is generated from various .c files, if you change it, your
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bits may be lost.
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All the prototypes and definitions following the comment "THE FOLLOWING
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IS EXTRACTED FROM THE SOURCE" are extracted from the source files for
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BFD. If you change it, someone oneday will extract it from the source
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again, and your changes will be lost. To save yourself from this bind,
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change the definitions in the source in the bfd directory. Type "make
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docs" and then "make headers" in that directory, and magically this file
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will change to reflect your changes.
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If you don't have the tools to perform the extraction, then you are
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safe from someone on your system trampling over your header files.
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You should still maintain the equivalence between the source and this
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file though; every change you make to the .c file should be reflected
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here. */
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#ifndef __BFD_H_SEEN__
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#define __BFD_H_SEEN__
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#include "ansidecl.h"
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#include "obstack.h"
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/* Make it easier to declare prototypes (puts conditional here) */
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#ifndef PROTO
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# if __STDC__
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# define PROTO(type, name, arglist) type name arglist
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# else
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# define PROTO(type, name, arglist) type name ()
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# endif
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#endif
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#define BFD_VERSION "1.15"
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/* forward declaration */
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typedef struct _bfd bfd;
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/* General rules: functions which are boolean return true on success
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and false on failure (unless they're a predicate). -- bfd.doc */
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/* I'm sure this is going to break something and someone is going to
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force me to change it. */
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typedef enum boolean {false, true} boolean;
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/* Try to avoid breaking stuff */
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typedef long int file_ptr;
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/* Support for different sizes of target format ints and addresses */
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#ifdef HOST_64_BIT
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typedef HOST_64_BIT rawdata_offset;
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typedef HOST_64_BIT bfd_vma;
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typedef HOST_64_BIT bfd_word;
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typedef HOST_64_BIT bfd_offset;
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typedef HOST_64_BIT bfd_size_type;
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typedef HOST_64_BIT symvalue;
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typedef HOST_64_BIT bfd_64_type;
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#define fprintf_vma(s,x) \
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fprintf(s,"%08x%08x", uint64_typeHIGH(x), uint64_typeLOW(x))
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#define printf_vma(x) \
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printf( "%08x%08x", uint64_typeHIGH(x), uint64_typeLOW(x))
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#else
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typedef struct {int a,b;} bfd_64_type;
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typedef unsigned long rawdata_offset;
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typedef unsigned long bfd_vma;
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typedef unsigned long bfd_offset;
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typedef unsigned long bfd_word;
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typedef unsigned long bfd_size;
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typedef unsigned long symvalue;
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typedef unsigned long bfd_size_type;
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#define printf_vma(x) printf( "%08lx", x)
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#define fprintf_vma(s,x) fprintf(s, "%08lx", x)
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#endif
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typedef unsigned int flagword; /* 32 bits of flags */
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/** File formats */
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typedef enum bfd_format {
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bfd_unknown = 0, /* file format is unknown */
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bfd_object, /* linker/assember/compiler output */
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bfd_archive, /* object archive file */
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bfd_core, /* core dump */
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bfd_type_end} /* marks the end; don't use it! */
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bfd_format;
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/* Object file flag values */
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#define NO_FLAGS 0
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#define HAS_RELOC 001
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#define EXEC_P 002
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#define HAS_LINENO 004
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#define HAS_DEBUG 010
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#define HAS_SYMS 020
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#define HAS_LOCALS 040
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#define DYNAMIC 0100
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#define WP_TEXT 0200
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#define D_PAGED 0400
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/* symbols and relocation */
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typedef unsigned long symindex;
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#define BFD_NO_MORE_SYMBOLS ((symindex) ~0)
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typedef enum bfd_symclass {
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bfd_symclass_unknown = 0,
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bfd_symclass_fcommon, /* fortran common symbols */
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bfd_symclass_global, /* global symbol, what a surprise */
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bfd_symclass_debugger, /* some debugger symbol */
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bfd_symclass_undefined /* none known */
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} symclass;
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typedef int symtype; /* Who knows, yet? */
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/* general purpose part of a symbol;
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target specific parts will be found in libcoff.h, liba.out.h etc */
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#define bfd_get_section(x) ((x)->section)
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#define bfd_get_output_section(x) ((x)->section->output_section)
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#define bfd_set_section(x,y) ((x)->section) = (y)
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#define bfd_asymbol_base(x) ((x)->section?((x)->section->vma):0)
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#define bfd_asymbol_value(x) (bfd_asymbol_base(x) + x->value)
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#define bfd_asymbol_name(x) ((x)->name)
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/* This is a type pun with struct ranlib on purpose! */
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typedef struct carsym {
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char *name;
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file_ptr file_offset; /* look here to find the file */
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} carsym; /* to make these you call a carsymogen */
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/* Used in generating armaps. Perhaps just a forward definition would do? */
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struct orl { /* output ranlib */
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char **name; /* symbol name */
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file_ptr pos; /* bfd* or file position */
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int namidx; /* index into string table */
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};
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/* Linenumber stuff */
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typedef struct lineno_cache_entry {
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unsigned int line_number; /* Linenumber from start of function*/
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union {
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struct symbol_cache_entry *sym; /* Function name */
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unsigned long offset; /* Offset into section */
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} u;
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} alent;
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/* object and core file sections */
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#define align_power(addr, align) \
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( ((addr) + ((1<<(align))-1)) & (-1 << (align)))
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typedef struct sec *sec_ptr;
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#define bfd_section_name(bfd, ptr) ((ptr)->name)
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#define bfd_section_size(bfd, ptr) ((ptr)->size)
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#define bfd_section_vma(bfd, ptr) ((ptr)->vma)
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#define bfd_section_alignment(bfd, ptr) ((ptr)->alignment_power)
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#define bfd_get_section_flags(bfd, ptr) ((ptr)->flags)
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#define bfd_get_section_userdata(bfd, ptr) ((ptr)->userdata)
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#define bfd_set_section_vma(bfd, ptr, val) (((ptr)->vma = (val)), true)
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#define bfd_set_section_alignment(bfd, ptr, val) (((ptr)->alignment_power = (val)),true)
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#define bfd_set_section_userdata(bfd, ptr, val) (((ptr)->userdata = (val)),true)
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typedef struct stat stat_type;
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/** Error handling */
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typedef enum bfd_error {
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no_error = 0, system_call_error, invalid_target,
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wrong_format, invalid_operation, no_memory,
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no_symbols, no_relocation_info,
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no_more_archived_files, malformed_archive,
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symbol_not_found, file_not_recognized,
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file_ambiguously_recognized, no_contents,
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bfd_error_nonrepresentable_section,
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invalid_error_code} bfd_ec;
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extern bfd_ec bfd_error;
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typedef struct bfd_error_vector {
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PROTO(void,(* nonrepresentable_section ),(CONST bfd *CONST abfd,
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CONST char *CONST name));
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} bfd_error_vector_type;
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PROTO (char *, bfd_errmsg, ());
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PROTO (void, bfd_perror, (CONST char *message));
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typedef enum bfd_print_symbol
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{
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bfd_print_symbol_name_enum,
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bfd_print_symbol_type_enum,
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bfd_print_symbol_all_enum
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} bfd_print_symbol_enum_type;
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/* The code that implements targets can initialize a jump table with this
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macro. It must name all its routines the same way (a prefix plus
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the standard routine suffix), or it must #define the routines that
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are not so named, before calling JUMP_TABLE in the initializer. */
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/* Semi-portable string concatenation in cpp */
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#ifndef CAT
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#ifdef __STDC__
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#define CAT(a,b) a##b
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#else
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#define CAT(a,b) a/**/b
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#endif
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#endif
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#define JUMP_TABLE(NAME)\
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CAT(NAME,_core_file_failing_command),\
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CAT(NAME,_core_file_failing_signal),\
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CAT(NAME,_core_file_matches_executable_p),\
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CAT(NAME,_slurp_armap),\
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CAT(NAME,_slurp_extended_name_table),\
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CAT(NAME,_truncate_arname),\
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CAT(NAME,_write_armap),\
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CAT(NAME,_close_and_cleanup), \
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CAT(NAME,_set_section_contents),\
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CAT(NAME,_get_section_contents),\
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CAT(NAME,_new_section_hook),\
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CAT(NAME,_get_symtab_upper_bound),\
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CAT(NAME,_get_symtab),\
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CAT(NAME,_get_reloc_upper_bound),\
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CAT(NAME,_canonicalize_reloc),\
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CAT(NAME,_make_empty_symbol),\
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CAT(NAME,_print_symbol),\
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CAT(NAME,_get_lineno),\
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CAT(NAME,_set_arch_mach),\
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CAT(NAME,_openr_next_archived_file),\
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CAT(NAME,_find_nearest_line),\
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CAT(NAME,_generic_stat_arch_elt),\
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CAT(NAME,_sizeof_headers),\
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CAT(NAME,_bfd_debug_info_start),\
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CAT(NAME,_bfd_debug_info_end),\
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CAT(NAME,_bfd_debug_info_accumulate)
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#define COFF_SWAP_TABLE coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in,
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/* User program access to BFD facilities */
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extern CONST short _bfd_host_big_endian;
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#define HOST_BYTE_ORDER_BIG_P (*(char *)&_bfd_host_big_endian)
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/* The bfd itself */
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/* Cast from const char * to char * so that caller can assign to
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a char * without a warning. */
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#define bfd_get_filename(abfd) ((char *) (abfd)->filename)
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#define bfd_get_format(abfd) ((abfd)->format)
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#define bfd_get_target(abfd) ((abfd)->xvec->name)
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#define bfd_get_file_flags(abfd) ((abfd)->flags)
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#define bfd_applicable_file_flags(abfd) ((abfd)->xvec->object_flags)
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#define bfd_applicable_section_flags(abfd) ((abfd)->xvec->section_flags)
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#define bfd_my_archive(abfd) ((abfd)->my_archive);
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#define bfd_has_map(abfd) ((abfd)->has_armap)
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#define bfd_header_twiddle_required(abfd) \
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((((abfd)->xvec->header_byteorder_big_p) \
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!= (boolean)HOST_BYTE_ORDER_BIG_P) ? true:false)
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#define bfd_valid_reloc_types(abfd) ((abfd)->xvec->valid_reloc_types)
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#define bfd_usrdata(abfd) ((abfd)->usrdata)
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#define bfd_get_start_address(abfd) ((abfd)->start_address)
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#define bfd_get_symcount(abfd) ((abfd)->symcount)
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#define bfd_get_outsymbols(abfd) ((abfd)->outsymbols)
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#define bfd_count_sections(abfd) ((abfd)->section_count)
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#define bfd_get_architecture(abfd) ((abfd)->obj_arch)
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#define bfd_get_machine(abfd) ((abfd)->obj_machine)
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#define BYTE_SIZE 1
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#define SHORT_SIZE 2
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#define LONG_SIZE 4
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/*THE FOLLOWING IS EXTRACTED FROM THE SOURCE */
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/* FROM opncls.c*/
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/* ------------------------------START FROM opncls.c
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*i bfd_openr
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Opens the file supplied (using fopen) with the target supplied, it
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returns a pointer to the created bfd.
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If NULL is returned then an error has occured.
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Possible errors are no_memory, invalid_target or system_call error.
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*/
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PROTO(bfd*, bfd_openr, (CONST char *filename,CONST char*target));
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/*
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*i bfd_fdopenr
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bfd_fdopenr is to bfd_fopenr much like fdopen is to fopen. It opens a bfd on
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a file already described by the @var{fd} supplied.
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Possible errors are no_memory, invalid_target and system_call error.
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*/
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PROTO(bfd *, bfd_fdopenr,
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(CONST char *filename, CONST char *target, int fd));
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/*
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bfd_openw
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Creates a bfd, associated with file @var{filename}, using the file
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format @var{target}, and returns a pointer to it.
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Possible errors are system_call_error, no_memory, invalid_target.
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*/
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PROTO(bfd *, bfd_openw, (CONST char *filename, CONST char *target));
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/*
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bfd_close
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This function closes a bfd. If the bfd was open for writing, then
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pending operations are completed and the file written out and closed.
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If the created file is executable, then @code{chmod} is called to mark
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it as such.
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All memory attatched to the bfd's obstacks is released.
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@code{true} is returned if all is ok, otherwise @code{false}.
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*/
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PROTO(boolean, bfd_close,(bfd *));
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/*
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bfd_create
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This routine creates a new bfd in the manner of bfd_openw, but without
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opening a file. The new bfd takes the target from the target used by
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@var{template}. The format is always set to @code{bfd_object}.
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*/
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PROTO(bfd *, bfd_create, (CONST char *filename, bfd *template));
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/*
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bfd_alloc_size
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Return the number of bytes in the obstacks connected to the supplied
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bfd.
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*/
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PROTO(bfd_size_type,bfd_alloc_size,(bfd *abfd));
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|
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/*
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--------------------------------END FROM opncls.c*/
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|
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/* FROM archures.c*/
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/* ------------------------------START FROM archures.c
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bfd_architecture
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This enum gives the object file's CPU
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architecture, in a global sense. E.g. what processor family does it
|
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belong to? There is another field, which indicates what processor
|
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within the family is in use. The machine gives a number which
|
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distingushes different versions of the architecture, containing for
|
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example 2 and 3 for Intel i960 KA and i960 KB, and 68020 and 68030 for
|
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Motorola 68020 and 68030.
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*/
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enum bfd_architecture
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{
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bfd_arch_unknown, /* File arch not known */
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bfd_arch_obscure, /* Arch known, not one of these */
|
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bfd_arch_m68k, /* Motorola 68xxx */
|
||
bfd_arch_vax, /* DEC Vax */
|
||
bfd_arch_i960, /* Intel 960 */
|
||
/* The order of the following is important.
|
||
lower number indicates a machine type that
|
||
only accepts a subset of the instructions
|
||
available to machines with higher numbers.
|
||
The exception is the "ca", which is
|
||
incompatible with all other machines except
|
||
"core". */
|
||
|
||
#define bfd_mach_i960_core 1
|
||
#define bfd_mach_i960_ka_sa 2
|
||
#define bfd_mach_i960_kb_sb 3
|
||
#define bfd_mach_i960_mc 4
|
||
#define bfd_mach_i960_xa 5
|
||
#define bfd_mach_i960_ca 6
|
||
|
||
bfd_arch_a29k, /* AMD 29000 */
|
||
bfd_arch_sparc, /* SPARC */
|
||
bfd_arch_mips, /* MIPS Rxxxx */
|
||
bfd_arch_i386, /* Intel 386 */
|
||
bfd_arch_ns32k, /* National Semiconductor 32xxx */
|
||
bfd_arch_tahoe, /* CCI/Harris Tahoe */
|
||
bfd_arch_i860, /* Intel 860 */
|
||
bfd_arch_romp, /* IBM ROMP RS/6000 */
|
||
bfd_arch_alliant, /* Alliant */
|
||
bfd_arch_convex, /* Convex */
|
||
bfd_arch_m88k, /* Motorola 88xxx */
|
||
bfd_arch_pyramid, /* Pyramid Technology */
|
||
bfd_arch_h8_300, /* Hitachi H8/300 */
|
||
bfd_arch_last
|
||
};
|
||
|
||
/*
|
||
stuff
|
||
|
||
bfd_prinable_arch_mach
|
||
Return a printable string representing the architecture and machine
|
||
type. The result is only good until the next call to
|
||
bfd_printable_arch_mach.
|
||
*/
|
||
PROTO(CONST char *,bfd_printable_arch_mach,
|
||
(enum bfd_architecture arch, unsigned long machine));
|
||
|
||
/*
|
||
|
||
*i bfd_scan_arch_mach
|
||
Scan a string and attempt to turn it into an archive and machine type combination.
|
||
*/
|
||
PROTO(boolean, bfd_scan_arch_mach,
|
||
(CONST char *, enum bfd_architecture *, unsigned long *));
|
||
|
||
/*
|
||
|
||
*i bfd_arch_compatible
|
||
This routine is used to determine whether two BFDs' architectures and machine types are
|
||
compatible. It calculates the lowest common denominator between the
|
||
two architectures and machine types implied by the bfds and sets the
|
||
objects pointed at by @var{archp} and @var{machine} if non NULL.
|
||
|
||
This routine returns @code{true} if the bfds are of compatible type,
|
||
otherwise @code{false}.
|
||
*/
|
||
PROTO(boolean, bfd_arch_compatible,
|
||
(bfd *abfd,
|
||
bfd *bbfd,
|
||
enum bfd_architecture *archp,
|
||
unsigned long *machinep));
|
||
|
||
/*
|
||
|
||
bfd_set_arch_mach
|
||
Set atch mach
|
||
*/
|
||
#define bfd_set_arch_mach(abfd, arch, mach) \
|
||
BFD_SEND (abfd, _bfd_set_arch_mach,\
|
||
(abfd, arch, mach))
|
||
|
||
/*
|
||
--------------------------------END FROM archures.c*/
|
||
|
||
|
||
|
||
/* FROM libbfd.c*/
|
||
/* ------------------------------START FROM libbfd.c
|
||
|
||
*i bfd_put_size
|
||
*i bfd_get_size
|
||
These macros as used for reading and writing raw data in sections;
|
||
each access (except for bytes) is vectored through the target format
|
||
of the bfd and mangled accordingly. The mangling performs any
|
||
necessary endian translations and removes alignment restrictions.
|
||
*/
|
||
#define bfd_put_8(abfd, val, ptr) \
|
||
(*((char *)ptr) = (char)val)
|
||
#define bfd_get_8(abfd, ptr) \
|
||
(*((char *)ptr))
|
||
#define bfd_put_16(abfd, val, ptr) \
|
||
BFD_SEND(abfd, bfd_putx16, (val,ptr))
|
||
#define bfd_get_16(abfd, ptr) \
|
||
BFD_SEND(abfd, bfd_getx16, (ptr))
|
||
#define bfd_put_32(abfd, val, ptr) \
|
||
BFD_SEND(abfd, bfd_putx32, (val,ptr))
|
||
#define bfd_get_32(abfd, ptr) \
|
||
BFD_SEND(abfd, bfd_getx32, (ptr))
|
||
#define bfd_put_64(abfd, val, ptr) \
|
||
BFD_SEND(abfd, bfd_putx64, (val, ptr))
|
||
#define bfd_get_64(abfd, ptr) \
|
||
BFD_SEND(abfd, bfd_getx64, (ptr))
|
||
/* *i bfd_h_put_size
|
||
*i bfd_h_get_size
|
||
These macros have the same function as their @code{bfd_get_x}
|
||
bretherin, except that they are used for removing information for the
|
||
header records of object files. Believe it or not, some object files
|
||
keep their header records in big endian order, and their data in little
|
||
endan order.
|
||
*/
|
||
#define bfd_h_put_8(abfd, val, ptr) \
|
||
(*((char *)ptr) = (char)val)
|
||
#define bfd_h_get_8(abfd, ptr) \
|
||
(*((char *)ptr))
|
||
#define bfd_h_put_16(abfd, val, ptr) \
|
||
BFD_SEND(abfd, bfd_h_putx16,(val,ptr))
|
||
#define bfd_h_get_16(abfd, ptr) \
|
||
BFD_SEND(abfd, bfd_h_getx16,(ptr))
|
||
#define bfd_h_put_32(abfd, val, ptr) \
|
||
BFD_SEND(abfd, bfd_h_putx32,(val,ptr))
|
||
#define bfd_h_get_32(abfd, ptr) \
|
||
BFD_SEND(abfd, bfd_h_getx32,(ptr))
|
||
#define bfd_h_put_64(abfd, val, ptr) \
|
||
BFD_SEND(abfd, bfd_h_putx64,(val, ptr))
|
||
#define bfd_h_get_64(abfd, ptr) \
|
||
BFD_SEND(abfd, bfd_h_getx64,(ptr))
|
||
/* --------------------------------END FROM libbfd.c*/
|
||
|
||
/* FROM section.c*/
|
||
/* ------------------------------START FROM section.c
|
||
|
||
The shape of a section struct:
|
||
*/
|
||
|
||
typedef struct sec {
|
||
|
||
/*
|
||
The name of the section, the name isn't a copy, the pointer is
|
||
the same as that passed to bfd_make_section.
|
||
*/
|
||
|
||
CONST char *name;
|
||
|
||
/*
|
||
The next section in the list belonging to the bfd, or NULL.
|
||
*/
|
||
|
||
struct sec *next;
|
||
|
||
/*
|
||
The field flags contains attributes of the section. Some of these
|
||
flags are read in from the object file, and some are synthesized from
|
||
other information.
|
||
*/
|
||
|
||
flagword flags;
|
||
|
||
/*
|
||
*/
|
||
|
||
#define SEC_NO_FLAGS 0x000
|
||
|
||
/*
|
||
Tells the OS to allocate space for this section when loaded.
|
||
This would clear for a section containing debug information only.
|
||
*/
|
||
|
||
#define SEC_ALLOC 0x001
|
||
|
||
/*
|
||
Tells the OS to load the section from the file when loading.
|
||
This would be clear for a .bss section
|
||
*/
|
||
|
||
#define SEC_LOAD 0x002
|
||
|
||
/*
|
||
The section contains data still to be relocated, so there will be some
|
||
relocation information too.
|
||
*/
|
||
|
||
#define SEC_RELOC 0x004
|
||
|
||
/*
|
||
Obsolete ?
|
||
*/
|
||
|
||
#define SEC_BALIGN 0x008
|
||
|
||
/*
|
||
A signal to the OS that the section contains read only data.
|
||
*/
|
||
|
||
#define SEC_READONLY 0x010
|
||
|
||
/*
|
||
The section contains code only.
|
||
*/
|
||
|
||
#define SEC_CODE 0x020
|
||
|
||
/*
|
||
The section contains data only.
|
||
*/
|
||
|
||
#define SEC_DATA 0x040
|
||
|
||
/*
|
||
The section will reside in ROM.
|
||
*/
|
||
|
||
#define SEC_ROM 0x080
|
||
|
||
/*
|
||
The section contains constructor information. This section type is
|
||
used by the linker to create lists of constructors and destructors
|
||
used by @code{g++}. When a back end sees a symbol which should be used
|
||
in a constructor list, it creates a new section for the type of name
|
||
(eg @code{__CTOR_LIST__}), attatches the symbol to it and builds a
|
||
relocation. To build the lists of constructors, all the linker has to
|
||
to is catenate all the sections called @code{__CTOR_LIST__} and
|
||
relocte the data contained within - exactly the operations it would
|
||
peform on standard data.
|
||
*/
|
||
|
||
#define SEC_CONSTRUCTOR 0x100
|
||
|
||
/*
|
||
The section is a constuctor, and should be placed at the end of the ..
|
||
*/
|
||
|
||
#define SEC_CONSTRUCTOR_TEXT 0x1100
|
||
|
||
/*
|
||
*/
|
||
#define SEC_CONSTRUCTOR_DATA 0x2100
|
||
|
||
/*
|
||
*/
|
||
#define SEC_CONSTRUCTOR_BSS 0x3100
|
||
|
||
/*
|
||
|
||
The section has contents - a bss section could be
|
||
@code{SEC_ALLOC} | @code{SEC_HAS_CONTENTS}, a debug section could be
|
||
@code{SEC_HAS_CONTENTS}
|
||
*/
|
||
|
||
#define SEC_HAS_CONTENTS 0x200
|
||
|
||
/*
|
||
An instruction to the linker not to output sections containing
|
||
this flag even if they have information which would normally be written.
|
||
*/
|
||
|
||
#define SEC_NEVER_LOAD 0x400
|
||
|
||
/*
|
||
|
||
The base address of the section in the address space of the target.
|
||
*/
|
||
|
||
bfd_vma vma;
|
||
|
||
/*
|
||
The size of the section in bytes of the loaded section. This contains
|
||
a value even if the section has no contents (eg, the size of @code{.bss}).
|
||
*/
|
||
|
||
bfd_size_type size;
|
||
|
||
/*
|
||
If this section is going to be output, then this value is the
|
||
offset into the output section of the first byte in the input
|
||
section. Eg, if this was going to start at the 100th byte in the
|
||
output section, this value would be 100.
|
||
*/
|
||
|
||
bfd_vma output_offset;
|
||
|
||
/*
|
||
The output section through which to map on output.
|
||
*/
|
||
|
||
struct sec *output_section;
|
||
|
||
/*
|
||
The alignment requirement of the section, as an exponent - eg 3
|
||
aligns to 2^3 (or 8)
|
||
*/
|
||
|
||
unsigned int alignment_power;
|
||
|
||
/*
|
||
If an input section, a pointer to a vector of relocation records for
|
||
the data in this section.
|
||
*/
|
||
|
||
struct reloc_cache_entry *relocation;
|
||
|
||
/*
|
||
If an output section, a pointer to a vector of pointers to
|
||
relocation records for the data in this section.
|
||
*/
|
||
|
||
struct reloc_cache_entry **orelocation;
|
||
|
||
/*
|
||
The number of relocation records in one of the above
|
||
*/
|
||
|
||
unsigned reloc_count;
|
||
|
||
/*
|
||
Which section is it 0..nth
|
||
*/
|
||
|
||
int index;
|
||
|
||
/*
|
||
Information below is back end specific - and not always used or
|
||
updated
|
||
|
||
File position of section data
|
||
*/
|
||
|
||
file_ptr filepos;
|
||
/* File position of relocation info
|
||
*/
|
||
|
||
file_ptr rel_filepos;
|
||
|
||
/*
|
||
File position of line data
|
||
*/
|
||
|
||
file_ptr line_filepos;
|
||
|
||
/*
|
||
Pointer to data for applications
|
||
*/
|
||
|
||
PTR userdata;
|
||
|
||
/*
|
||
*/
|
||
struct lang_output_section *otheruserdata;
|
||
|
||
/*
|
||
Attached line number information
|
||
*/
|
||
|
||
alent *lineno;
|
||
/* Number of line number records
|
||
*/
|
||
|
||
unsigned int lineno_count;
|
||
|
||
/*
|
||
When a section is being output, this value changes as more
|
||
linenumbers are written out
|
||
*/
|
||
|
||
file_ptr moving_line_filepos;
|
||
|
||
/*
|
||
what the section number is in the target world
|
||
*/
|
||
|
||
unsigned int target_index;
|
||
|
||
/*
|
||
*/
|
||
PTR used_by_bfd;
|
||
|
||
/*
|
||
If this is a constructor section then here is a list of the
|
||
relocations created to relocate items within it.
|
||
*/
|
||
|
||
struct relent_chain *constructor_chain;
|
||
|
||
/*
|
||
The bfd which owns the section.
|
||
*/
|
||
|
||
bfd *owner;
|
||
|
||
/*
|
||
*/
|
||
} asection ;
|
||
|
||
/*
|
||
|
||
bfd_get_section_by_name
|
||
Runs through the provided @var{abfd} and returns the @code{asection}
|
||
who's name matches that provided, otherwise NULL. @xref{Sections}, for more information.
|
||
*/
|
||
|
||
PROTO(asection *, bfd_get_section_by_name,
|
||
(bfd *abfd, CONST char *name));
|
||
|
||
/*
|
||
|
||
bfd_make_section
|
||
This function creates a new empty section called @var{name} and attatches it
|
||
to the end of the chain of sections for @var{bfd}. An attempt to
|
||
create a section with a name which is already in use, returns the old
|
||
section by that name instead.
|
||
|
||
Possible errors are:
|
||
@table @code
|
||
@item invalid_operation
|
||
If output has already started for this bfd.
|
||
@item no_memory
|
||
If obstack alloc fails.
|
||
@end table
|
||
*/
|
||
|
||
PROTO(asection *, bfd_make_section, (bfd *, CONST char *name));
|
||
|
||
/*
|
||
|
||
bfd_set_section_flags
|
||
Attempts to set the attributes of the section named in the bfd
|
||
supplied to the value. Returns true on success, false on error.
|
||
Possible error returns are:
|
||
@table @code
|
||
@item invalid operation
|
||
The section cannot have one or more of the attributes requested. For
|
||
example, a .bss section in @code{a.out} may not have the
|
||
@code{SEC_HAS_CONTENTS} field set.
|
||
@end table
|
||
*/
|
||
|
||
PROTO(boolean, bfd_set_section_flags,
|
||
(bfd *, asection *, flagword));
|
||
|
||
/*
|
||
|
||
bfd_map_over_sections
|
||
Calls the provided function @var{func} for each section attatched to
|
||
the bfd @var{abfd}, passing @var{obj} as an argument. The function
|
||
will be called as if by
|
||
|
||
@example
|
||
func(abfd, the_section, obj);
|
||
@end example
|
||
*/
|
||
|
||
PROTO(void, bfd_map_over_sections,
|
||
(bfd *abfd, void (*func)(), PTR obj));
|
||
|
||
/*
|
||
|
||
This is the prefered method for iterating over sections, an
|
||
alternative would be to use a loop:
|
||
|
||
@example
|
||
section *p;
|
||
for (p = abfd->sections; p != NULL; p = p->next)
|
||
func(abfd, p, ...)
|
||
@end example
|
||
|
||
bfd_set_section_size
|
||
Sets @var{section} to the size @var{val}. If the operation is ok, then
|
||
@code{true} is returned, else @code{false}.
|
||
|
||
Possible error returns:
|
||
@table @code
|
||
@item invalid_operation
|
||
Writing has started to the bfd, so setting the size is invalid
|
||
@end table
|
||
*/
|
||
|
||
PROTO(boolean, bfd_set_section_size,
|
||
(bfd *, asection *, bfd_size_type val));
|
||
|
||
/*
|
||
|
||
bfd_set_section_contents
|
||
Sets the contents of the section @var{section} in bfd @var{abfd} to
|
||
the data starting in memory at @var{data}. The data is written to the
|
||
output section starting at offset @var{offset} for @var{count} bytes.
|
||
|
||
Normally @code{true} is returned, else @code{false}. Possible error
|
||
returns are:
|
||
@table @code
|
||
@item no_contents
|
||
The output section does not have the @code{SEC_HAS_CONTENTS}
|
||
attribute, so nothing can be written to it.
|
||
@item and some more too
|
||
@end table
|
||
This routine is front end to the back end function @code{_bfd_set_section_contents}.
|
||
*/
|
||
|
||
PROTO(boolean, bfd_set_section_contents,
|
||
(bfd *abfd,
|
||
asection *section,
|
||
PTR data,
|
||
file_ptr offset,
|
||
bfd_size_type count));
|
||
|
||
/*
|
||
|
||
bfd_get_section_contents
|
||
This function reads data from @var{section} in bfd @var{abfd} into
|
||
memory starting at @var{location}. The data is read at an offset of
|
||
@var{offset} from the start of the input section, and is read for
|
||
@var{count} bytes.
|
||
|
||
If the contents of a constuctor with the @code{SEC_CONSTUCTOR} flag
|
||
set are requested, then the @var{location} is filled with zeroes.
|
||
|
||
If no errors occur, @code{true} is returned, else @code{false}.
|
||
Possible errors are:
|
||
|
||
@table @code
|
||
@item unknown yet
|
||
@end table
|
||
*/
|
||
|
||
PROTO(boolean, bfd_get_section_contents,
|
||
(bfd *abfd, asection *section, PTR location,
|
||
file_ptr offset, bfd_size_type count));
|
||
|
||
/*
|
||
|
||
--------------------------------END FROM section.c*/
|
||
|
||
/* FROM syms.c*/
|
||
/* ------------------------------START FROM syms.c
|
||
|
||
@subsection typedef asymbol
|
||
An @code{asymbol} has the form:
|
||
*/
|
||
|
||
typedef struct symbol_cache_entry
|
||
{
|
||
/* A pointer to the bfd which owns the symbol. This information is
|
||
necessary so that a back end can work out what additional (invisible to
|
||
the application writer) information is carried with the symbol.
|
||
*/
|
||
|
||
struct _bfd *the_bfd;
|
||
|
||
/*
|
||
The text of the symbol. The name is left alone, and not copied - the
|
||
application may not alter it.
|
||
*/
|
||
|
||
CONST char *name;
|
||
|
||
/*
|
||
The value of the symbol.
|
||
*/
|
||
|
||
symvalue value;
|
||
|
||
/*
|
||
Attributes of a symbol:
|
||
*/
|
||
|
||
#define BSF_NO_FLAGS 0x00
|
||
|
||
/*
|
||
The symbol has local scope; @code{static} in @code{C}. The value is
|
||
the offset into the section of the data.
|
||
*/
|
||
|
||
#define BSF_LOCAL 0x01
|
||
|
||
/*
|
||
The symbol has global scope; initialized data in @code{C}. The value
|
||
is the offset into the section of the data.
|
||
*/
|
||
|
||
#define BSF_GLOBAL 0x02
|
||
|
||
/*
|
||
Obsolete
|
||
*/
|
||
|
||
#define BSF_IMPORT 0x04
|
||
|
||
/*
|
||
The symbol has global scope, and is exported. The value is the offset
|
||
into the section of the data.
|
||
*/
|
||
|
||
#define BSF_EXPORT 0x08
|
||
|
||
/*
|
||
The symbol is undefined. @code{extern} in @code{C}. The value has no meaning.
|
||
*/
|
||
|
||
#define BSF_UNDEFINED 0x10
|
||
|
||
/*
|
||
The symbol is common, initialized to zero; default in @code{C}. The
|
||
value is the size of the object in bytes.
|
||
*/
|
||
|
||
#define BSF_FORT_COMM 0x20
|
||
|
||
/*
|
||
A normal @code{C} symbol would be one of:
|
||
@code{BSF_LOCAL}, @code{BSF_FORT_COMM}, @code{BSF_UNDEFINED} or @code{BSF_EXPORT|BSD_GLOBAL}
|
||
|
||
The symbol is a debugging record. The value has an arbitary meaning.
|
||
*/
|
||
|
||
#define BSF_DEBUGGING 0x40
|
||
|
||
/*
|
||
The symbol has no section attached, any value is the actual value and
|
||
is not a relative offset to a section.
|
||
*/
|
||
|
||
#define BSF_ABSOLUTE 0x80
|
||
|
||
/*
|
||
Used by the linker
|
||
*/
|
||
|
||
#define BSF_KEEP 0x10000
|
||
#define BSF_KEEP_G 0x80000
|
||
|
||
/*
|
||
Unused
|
||
*/
|
||
|
||
#define BSF_WEAK 0x100000
|
||
#define BSF_CTOR 0x200000
|
||
#define BSF_FAKE 0x400000
|
||
|
||
/*
|
||
The symbol used to be a common symbol, but now it is allocated.
|
||
*/
|
||
|
||
#define BSF_OLD_COMMON 0x800000
|
||
|
||
/*
|
||
The default value for common data.
|
||
*/
|
||
|
||
#define BFD_FORT_COMM_DEFAULT_VALUE 0
|
||
|
||
/*
|
||
In some files the type of a symbol sometimes alters its location
|
||
in an output file - ie in coff a @code{ISFCN} symbol which is also @code{C_EXT}
|
||
symbol appears where it was declared and not at the end of a section.
|
||
This bit is set by the target bfd part to convey this information.
|
||
*/
|
||
|
||
#define BSF_NOT_AT_END 0x40000
|
||
|
||
/*
|
||
Signal that the symbol is the label of constructor section.
|
||
*/
|
||
|
||
#define BSF_CONSTRUCTOR 0x1000000
|
||
|
||
/*
|
||
Signal that the symbol is a warning symbol. If the symbol is a warning
|
||
symbol, then the value field (I know this is tacky) will point to the
|
||
asymbol which when referenced will cause the warning.
|
||
*/
|
||
|
||
#define BSF_WARNING 0x2000000
|
||
|
||
/*
|
||
Signal that the symbol is indirect. The value of the symbol is a
|
||
pointer to an undefined asymbol which contains the name to use
|
||
instead.
|
||
*/
|
||
|
||
#define BSF_INDIRECT 0x4000000
|
||
|
||
/*
|
||
*/
|
||
flagword flags;
|
||
|
||
/*
|
||
Aointer to the section to which this symbol is relative, or 0 if the
|
||
symbol is absolute or undefined. Note that it is not sufficient to set
|
||
this location to 0 to mark a symbol as absolute - the flag
|
||
@code{BSF_ABSOLUTE} must be set also.
|
||
*/
|
||
|
||
struct sec *section;
|
||
|
||
/*
|
||
Back end special data. This is being phased out in favour of making
|
||
this a union.
|
||
*/
|
||
|
||
PTR udata;
|
||
} asymbol;
|
||
|
||
/*
|
||
|
||
get_symtab_upper_bound
|
||
Returns the number of bytes required in a vector of pointers to
|
||
@code{asymbols} for all the symbols in the supplied bfd, including a
|
||
terminal NULL pointer. If there are no symbols in the bfd, then 0 is
|
||
returned.
|
||
*/
|
||
#define get_symtab_upper_bound(abfd) \
|
||
BFD_SEND (abfd, _get_symtab_upper_bound, (abfd))
|
||
|
||
/*
|
||
|
||
bfd_canonicalize_symtab
|
||
Supplied a bfd and a pointer to an uninitialized vector of pointers.
|
||
This reads in the symbols from the bfd, and fills in the table with
|
||
pointers to the symbols, and a trailing NULL. The routine returns the
|
||
actual number of symbol pointers not including the NULL.
|
||
*/
|
||
|
||
#define bfd_canonicalize_symtab(abfd, location) \
|
||
BFD_SEND (abfd, _bfd_canonicalize_symtab,\
|
||
(abfd, location))
|
||
|
||
/*
|
||
bfd_set_symtab
|
||
Provided a table of pointers to to symbols and a count, writes to the
|
||
output bfd the symbols when closed.
|
||
*/
|
||
|
||
PROTO(boolean, bfd_set_symtab, (bfd *, asymbol **, unsigned int ));
|
||
|
||
/*
|
||
|
||
bfd_print_symbol_vandf
|
||
Prints the value and flags of the symbol supplied to the stream file.
|
||
*/
|
||
|
||
PROTO(void, bfd_print_symbol_vandf, (PTR file, asymbol *symbol));
|
||
|
||
/*
|
||
|
||
bfd_make_empty_symbol
|
||
This function creates a new @code{asymbol} structure for the bfd, and
|
||
returns a pointer to it.
|
||
|
||
This routine is necessary, since each back end has private information
|
||
surrounding the @code{asymbol}. Building your own @code{asymbol} and
|
||
pointing to it will not create the private information, and will cause
|
||
problems later on.
|
||
*/
|
||
#define bfd_make_empty_symbol(abfd) \
|
||
BFD_SEND (abfd, _bfd_make_empty_symbol, (abfd))
|
||
|
||
/*
|
||
--------------------------------END FROM syms.c*/
|
||
|
||
/* FROM bfd.c*/
|
||
/* ------------------------------START FROM bfd.c
|
||
|
||
@section typedef bfd
|
||
|
||
Pointers to bfd structs are the cornerstone of any application using
|
||
libbfd. References though the bfd and to data in the bfd give the
|
||
entire bfd functionality.
|
||
|
||
Finally! The BFD struct itself. This contains the major data about
|
||
the file, and contains pointers to the rest of the data.
|
||
*/
|
||
|
||
struct _bfd
|
||
{
|
||
/* The filename the application opened the bfd with.
|
||
*/
|
||
|
||
CONST char *filename;
|
||
|
||
/*
|
||
A pointer to the target jump table.
|
||
*/
|
||
|
||
struct bfd_target *xvec;
|
||
|
||
/*
|
||
|
||
To avoid dragging too many header files into every file that
|
||
includes bfd.h, IOSTREAM has been declared as a "char *", and MTIME
|
||
as a "long". Their correct types, to which they are cast when used,
|
||
are "FILE *" and "time_t".
|
||
|
||
The iostream is the result of an fopen on the filename.
|
||
*/
|
||
|
||
char *iostream;
|
||
|
||
/*
|
||
Is the file being cached @xref{File Caching}.
|
||
*/
|
||
|
||
boolean cacheable;
|
||
|
||
/*
|
||
Marks whether there was a default target specified when the bfd was
|
||
opened. This is used to select what matching algorithm to use to chose
|
||
the back end.
|
||
*/
|
||
|
||
boolean target_defaulted;
|
||
|
||
/*
|
||
The caching routines use these to maintain an LRU list of bfds.
|
||
*/
|
||
|
||
struct _bfd *lru_prev, *lru_next;
|
||
|
||
/*
|
||
When a file is closed by the caching routines, it retains the state
|
||
here:
|
||
*/
|
||
|
||
file_ptr where;
|
||
|
||
/*
|
||
and here:
|
||
*/
|
||
|
||
boolean opened_once;
|
||
|
||
/*
|
||
*/
|
||
boolean mtime_set;
|
||
/* File modified time
|
||
*/
|
||
|
||
long mtime;
|
||
|
||
/*
|
||
For output files, channel we locked (is this used?).
|
||
*/
|
||
|
||
int ifd;
|
||
|
||
/*
|
||
The format which belongs to the bfd.
|
||
*/
|
||
|
||
bfd_format format;
|
||
|
||
/*
|
||
The direction the bfd was opened with
|
||
*/
|
||
|
||
enum bfd_direction {no_direction = 0,
|
||
read_direction = 1,
|
||
write_direction = 2,
|
||
both_direction = 3} direction;
|
||
|
||
/*
|
||
Format_specific flags
|
||
*/
|
||
|
||
flagword flags;
|
||
|
||
/*
|
||
Currently my_archive is tested before adding origin to anything. I
|
||
believe that this can become always an add of origin, with origin set
|
||
to 0 for non archive files.
|
||
*/
|
||
|
||
file_ptr origin;
|
||
|
||
/*
|
||
Remember when output has begun, to stop strange things happening.
|
||
*/
|
||
|
||
boolean output_has_begun;
|
||
|
||
/*
|
||
Pointer to linked list of sections
|
||
*/
|
||
|
||
struct sec *sections;
|
||
|
||
/*
|
||
The number of sections
|
||
*/
|
||
|
||
unsigned int section_count;
|
||
|
||
/*
|
||
Stuff only usefull for object files:
|
||
The start address.
|
||
*/
|
||
|
||
bfd_vma start_address;
|
||
/* Used for input and output
|
||
*/
|
||
|
||
unsigned int symcount;
|
||
/* Symtab for output bfd
|
||
*/
|
||
|
||
struct symbol_cache_entry **outsymbols;
|
||
|
||
/*
|
||
Architecture of object machine, eg m68k
|
||
*/
|
||
|
||
enum bfd_architecture obj_arch;
|
||
|
||
/*
|
||
Particular machine within arch, e.g. 68010
|
||
*/
|
||
|
||
unsigned long obj_machine;
|
||
|
||
/*
|
||
Stuff only usefull for archives:
|
||
*/
|
||
|
||
PTR arelt_data;
|
||
struct _bfd *my_archive;
|
||
struct _bfd *next;
|
||
struct _bfd *archive_head;
|
||
boolean has_armap;
|
||
|
||
/*
|
||
Used by the back end to hold private data.
|
||
*/
|
||
|
||
PTR tdata;
|
||
|
||
/*
|
||
Used by the application to hold private data
|
||
*/
|
||
|
||
PTR usrdata;
|
||
|
||
/*
|
||
Where all the allocated stuff under this BFD goes
|
||
*/
|
||
|
||
struct obstack memory;
|
||
};
|
||
|
||
/*
|
||
|
||
bfd_set_start_address
|
||
|
||
Marks the entry point of an output bfd. Returns @code{true} on
|
||
success, @code{false} otherwise.
|
||
*/
|
||
|
||
PROTO(boolean, bfd_set_start_address,(bfd *, bfd_vma));
|
||
|
||
/*
|
||
|
||
bfd_get_mtime
|
||
|
||
Return cached file modification time (e.g. as read from archive header
|
||
for archive members, or from file system if we have been called
|
||
before); else determine modify time, cache it, and return it.
|
||
*/
|
||
|
||
PROTO(long, bfd_get_mtime, (bfd *));
|
||
|
||
/*
|
||
|
||
stuff
|
||
*/
|
||
|
||
|
||
#define bfd_sizeof_headers(abfd, reloc) \
|
||
BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))
|
||
|
||
#define bfd_find_nearest_line(abfd, section, symbols, offset, filename_ptr, func, line_ptr) \
|
||
BFD_SEND (abfd, _bfd_find_nearest_line, (abfd, section, symbols, offset, filename_ptr, func, line_ptr))
|
||
|
||
#define bfd_debug_info_start(abfd) \
|
||
BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
|
||
|
||
#define bfd_debug_info_end(abfd) \
|
||
BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
|
||
|
||
#define bfd_debug_info_accumulate(abfd, section) \
|
||
BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
|
||
|
||
#define bfd_stat_arch_elt(abfd, stat) \
|
||
BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
|
||
|
||
#define bfd_coff_swap_aux_in(a,e,t,c,i) \
|
||
BFD_SEND (a, _bfd_coff_swap_aux_in, (a,e,t,c,i))
|
||
|
||
#define bfd_coff_swap_sym_in(a,e,i) \
|
||
BFD_SEND (a, _bfd_coff_swap_sym_in, (a,e,i))
|
||
|
||
#define bfd_coff_swap_lineno_in(a,e,i) \
|
||
BFD_SEND ( a, _bfd_coff_swap_lineno_in, (a,e,i))
|
||
|
||
/*
|
||
|
||
--------------------------------END FROM bfd.c*/
|
||
|
||
/* FROM archive.c*/
|
||
/* ------------------------------START FROM archive.c
|
||
bfd_get_next_mapent
|
||
What this does
|
||
*/
|
||
PROTO(symindex, bfd_get_next_mapent, (bfd *, symindex, carsym **));
|
||
|
||
/*
|
||
|
||
bfd_set_archive_head
|
||
Used whilst processing archives. Sets the head of the chain of bfds
|
||
contained in an archive to @var{new_head}. (see chapter on archives)
|
||
*/
|
||
PROTO(boolean, bfd_set_archive_head, (bfd *output, bfd *new_head));
|
||
|
||
/*
|
||
|
||
bfd_get_elt_at_index
|
||
*/
|
||
|
||
PROTO(bfd *, bfd_get_elt_at_index, (bfd *, int));
|
||
|
||
/*
|
||
|
||
bfd_openr_next_archived_file
|
||
Initially provided a bfd containing an archive and NULL, opens a bfd
|
||
on the first contained element and returns that. Subsequent calls to
|
||
bfd_openr_next_archived_file should pass the archive and the previous
|
||
return value to return a created bfd to the next contained element.
|
||
NULL is returned when there are no more.
|
||
*/
|
||
|
||
PROTO(bfd*, bfd_openr_next_archived_file,
|
||
(bfd *archive, bfd *previous));
|
||
|
||
/*
|
||
|
||
--------------------------------END FROM archive.c*/
|
||
|
||
/* FROM core.c*/
|
||
|
||
/* FROM reloc.c*/
|
||
/* ------------------------------START FROM reloc.c
|
||
bfd_perform_relocation
|
||
The relocation routine returns as a status an enumerated type:
|
||
*/
|
||
|
||
typedef enum bfd_reloc_status {
|
||
/* No errors detected
|
||
*/
|
||
|
||
bfd_reloc_ok,
|
||
|
||
/*
|
||
The relocation was performed, but there was an overflow.
|
||
*/
|
||
|
||
bfd_reloc_overflow,
|
||
|
||
/*
|
||
The address to relocate was not within the section supplied
|
||
*/
|
||
|
||
bfd_reloc_outofrange,
|
||
|
||
/*
|
||
Used by special functions
|
||
*/
|
||
|
||
bfd_reloc_continue,
|
||
|
||
/*
|
||
Unused
|
||
*/
|
||
|
||
bfd_reloc_notsupported,
|
||
|
||
/*
|
||
Unsupported relocation size requested.
|
||
*/
|
||
|
||
bfd_reloc_other,
|
||
|
||
/*
|
||
The symbol to relocate against was undefined.
|
||
*/
|
||
|
||
bfd_reloc_undefined,
|
||
|
||
/*
|
||
The relocaction was performed, but may not be ok - presently generated
|
||
only when linking i960 coff files with i960 b.out symbols.
|
||
*/
|
||
|
||
bfd_reloc_dangerous
|
||
}
|
||
bfd_reloc_status_enum_type;
|
||
|
||
/*
|
||
*/
|
||
|
||
typedef struct reloc_cache_entry
|
||
{
|
||
|
||
/*
|
||
A pointer into the canonical table of pointers
|
||
*/
|
||
|
||
struct symbol_cache_entry **sym_ptr_ptr;
|
||
|
||
/*
|
||
offset in section
|
||
*/
|
||
|
||
rawdata_offset address;
|
||
|
||
/*
|
||
addend for relocation value
|
||
*/
|
||
|
||
bfd_vma addend;
|
||
|
||
/*
|
||
if sym is null this is the section
|
||
*/
|
||
|
||
struct sec *section;
|
||
|
||
/*
|
||
Pointer to how to perform the required relocation
|
||
*/
|
||
|
||
CONST struct reloc_howto_struct *howto;
|
||
} arelent;
|
||
|
||
/*
|
||
|
||
reloc_howto_type
|
||
The @code{reloc_howto_type} is a structure which contains all the
|
||
information that bfd needs to know to tie up a back end's data.
|
||
*/
|
||
|
||
typedef CONST struct reloc_howto_struct
|
||
{
|
||
/* The type field has mainly a documetary use - the back end can to what
|
||
it wants with it, though the normally the back end's external idea of
|
||
what a reloc number would be would be stored in this field. For
|
||
example, the a PC relative word relocation in a coff environment would
|
||
have the type 023 - because that's what the outside world calls a
|
||
R_PCRWORD reloc.
|
||
*/
|
||
|
||
unsigned int type;
|
||
|
||
/*
|
||
The value the final relocation is shifted right by. This drops
|
||
unwanted data from the relocation.
|
||
*/
|
||
|
||
unsigned int rightshift;
|
||
|
||
/*
|
||
The size of the item to be relocated - 0, is one byte, 1 is 2 bytes, 3
|
||
is four bytes.
|
||
*/
|
||
|
||
unsigned int size;
|
||
|
||
/*
|
||
Now obsolete
|
||
*/
|
||
|
||
unsigned int bitsize;
|
||
|
||
/*
|
||
Notes that the relocation is relative to the location in the data
|
||
section of the addend. The relocation function will subtract from the
|
||
relocation value the address of the location being relocated.
|
||
*/
|
||
|
||
boolean pc_relative;
|
||
|
||
/*
|
||
Now obsolete
|
||
*/
|
||
|
||
unsigned int bitpos;
|
||
|
||
/*
|
||
Now obsolete
|
||
*/
|
||
|
||
boolean absolute;
|
||
|
||
/*
|
||
Causes the relocation routine to return an error if overflow is
|
||
detected when relocating.
|
||
*/
|
||
|
||
boolean complain_on_overflow;
|
||
|
||
/*
|
||
If this field is non null, then the supplied function is called rather
|
||
than the normal function. This allows really strange relocation
|
||
methods to be accomodated (eg, i960 callj instructions).
|
||
*/
|
||
|
||
bfd_reloc_status_enum_type (*special_function)();
|
||
|
||
/*
|
||
The textual name of the relocation type.
|
||
*/
|
||
|
||
char *name;
|
||
|
||
/*
|
||
When performing a partial link, some formats must modify the
|
||
relocations rather than the data - this flag signals this.
|
||
*/
|
||
|
||
boolean partial_inplace;
|
||
|
||
/*
|
||
The src_mask is used to select what parts of the read in data are to
|
||
be used in the relocation sum. Eg, if this was an 8 bit bit of data
|
||
which we read and relocated, this would be 0x000000ff. When we have
|
||
relocs which have an addend, such as sun4 extended relocs, the value
|
||
in the offset part of a relocating field is garbage so we never use
|
||
it. In this case the mask would be 0x00000000.
|
||
*/
|
||
|
||
bfd_word src_mask;
|
||
/* The dst_mask is what parts of the instruction are replaced into the
|
||
instruction. In most cases src_mask == dst_mask, except in the above
|
||
special case, where dst_mask would be 0x000000ff, and src_mask would
|
||
be 0x00000000.
|
||
*/
|
||
|
||
bfd_word dst_mask;
|
||
|
||
/*
|
||
When some formats create PC relative instructions, they leave the
|
||
value of the pc of the place being relocated in the offset slot of the
|
||
instruction, so that a PC relative relocation can be made just by
|
||
adding in an ordinary offset (eg sun3 a.out). Some formats leave the
|
||
displacement part of an instruction empty (eg m88k bcs), this flag
|
||
signals the fact.
|
||
*/
|
||
|
||
boolean pcrel_offset;
|
||
} reloc_howto_type;
|
||
|
||
/*
|
||
|
||
HOWTO
|
||
The HOWTO define is horrible and will go away.
|
||
*/
|
||
#define HOWTO(C, R,S,B, P, BI, ABS, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
|
||
{(unsigned)C,R,S,B, P, BI, ABS,O,SF,NAME,INPLACE,MASKSRC,MASKDST,PC}
|
||
|
||
/*
|
||
|
||
reloc_chain
|
||
*/
|
||
typedef unsigned char bfd_byte;
|
||
|
||
typedef struct relent_chain {
|
||
arelent relent;
|
||
struct relent_chain *next;
|
||
} arelent_chain;
|
||
|
||
/*
|
||
|
||
If an output_bfd is supplied to this function the generated image
|
||
will be relocatable, the relocations are copied to the output file
|
||
after they have been changed to reflect the new state of the world.
|
||
There are two ways of reflecting the results of partial linkage in an
|
||
output file; by modifying the output data in place, and by modifying
|
||
the relocation record. Some native formats (eg basic a.out and basic
|
||
coff) have no way of specifying an addend in the relocation type, so
|
||
the addend has to go in the output data. This is no big deal since in
|
||
these formats the output data slot will always be big enough for the
|
||
addend. Complex reloc types with addends were invented to solve just
|
||
this problem.
|
||
*/
|
||
PROTO(bfd_reloc_status_enum_type,
|
||
bfd_perform_relocation,
|
||
(bfd * abfd,
|
||
arelent *reloc_entry,
|
||
PTR data,
|
||
asection *input_section,
|
||
bfd *output_bfd));
|
||
|
||
/*
|
||
|
||
--------------------------------END FROM reloc.c*/
|
||
|
||
/* FROM targets.c*/
|
||
/* ------------------------------START FROM targets.c
|
||
bfd_target
|
||
@node bfd_target
|
||
@subsection bfd_target
|
||
This structure contains everything that BFD knows about a target.
|
||
It includes things like its byte order, name, what routines to call
|
||
to do various operations, etc.
|
||
|
||
Every BFD points to a target structure with its "xvec" member.
|
||
|
||
Shortcut for declaring fields which are prototyped function pointers,
|
||
while avoiding anguish on compilers that don't support protos.
|
||
*/
|
||
|
||
#define SDEF(ret, name, arglist) \
|
||
PROTO(ret,(*name),arglist)
|
||
#define SDEF_FMT(ret, name, arglist) \
|
||
PROTO(ret,(*name[bfd_type_end]),arglist)
|
||
|
||
/*
|
||
These macros are used to dispatch to functions through the bfd_target
|
||
vector. They are used in a number of macros further down in bfd.h, and
|
||
are also used when calling various routines by hand inside the bfd
|
||
implementation. The "arglist" argument must be parenthesized; it
|
||
contains all the arguments to the called function.
|
||
*/
|
||
|
||
#define BFD_SEND(bfd, message, arglist) \
|
||
((*((bfd)->xvec->message)) arglist)
|
||
|
||
/*
|
||
For operations which index on the bfd format
|
||
*/
|
||
|
||
#define BFD_SEND_FMT(bfd, message, arglist) \
|
||
(((bfd)->xvec->message[(int)((bfd)->format)]) arglist)
|
||
|
||
/*
|
||
This is the struct which defines the type of BFD this is. The
|
||
"xvec" member of the struct bfd itself points here. Each module
|
||
that implements access to a different target under BFD, defines
|
||
one of these.
|
||
|
||
FIXME, these names should be rationalised with the names of the
|
||
entry points which call them. Too bad we can't have one macro to
|
||
define them both!
|
||
*/
|
||
|
||
typedef struct bfd_target
|
||
{
|
||
|
||
/*
|
||
identifies the kind of target, eg SunOS4, Ultrix, etc
|
||
*/
|
||
|
||
char *name;
|
||
|
||
/*
|
||
The "flavour" of a back end is a general indication about the contents
|
||
of a file.
|
||
*/
|
||
|
||
enum target_flavour_enum {
|
||
bfd_target_aout_flavour_enum,
|
||
bfd_target_coff_flavour_enum,
|
||
bfd_target_ieee_flavour_enum,
|
||
bfd_target_oasys_flavour_enum,
|
||
bfd_target_srec_flavour_enum} flavour;
|
||
|
||
/*
|
||
The order of bytes within the data area of a file.
|
||
*/
|
||
|
||
boolean byteorder_big_p;
|
||
|
||
/*
|
||
The order of bytes within the header parts of a file.
|
||
*/
|
||
|
||
boolean header_byteorder_big_p;
|
||
|
||
/*
|
||
This is a mask of all the flags which an executable may have set -
|
||
from the set @code{NO_FLAGS}, @code{HAS_RELOC}, ...@code{D_PAGED}.
|
||
*/
|
||
|
||
flagword object_flags;
|
||
|
||
/*
|
||
This is a mask of all the flags which a section may have set - from
|
||
the set @code{SEC_NO_FLAGS}, @code{SEC_ALLOC}, ...@code{SET_NEVER_LOAD}.
|
||
*/
|
||
|
||
flagword section_flags;
|
||
|
||
/*
|
||
The pad character for filenames within an archive header.
|
||
*/
|
||
|
||
char ar_pad_char;
|
||
|
||
/*
|
||
The maximum number of characters in an archive header.
|
||
*/
|
||
|
||
unsigned short ar_max_namelen;
|
||
|
||
/*
|
||
The minimum alignment restriction for any section.
|
||
*/
|
||
|
||
unsigned int align_power_min;
|
||
|
||
/*
|
||
Entries for byte swapping for data. These are different to the other
|
||
entry points, since they don't take bfd as first arg. Certain other handlers
|
||
could do the same.
|
||
*/
|
||
|
||
SDEF (bfd_vma, bfd_getx64, (bfd_byte *));
|
||
SDEF (void, bfd_putx64, (bfd_vma, bfd_byte *));
|
||
SDEF (bfd_vma, bfd_getx32, (bfd_byte *));
|
||
SDEF (void, bfd_putx32, (bfd_vma, bfd_byte *));
|
||
SDEF (bfd_vma, bfd_getx16, (bfd_byte *));
|
||
SDEF (void, bfd_putx16, (bfd_vma, bfd_byte *));
|
||
|
||
/*
|
||
Byte swapping for the headers
|
||
*/
|
||
|
||
SDEF (bfd_vma, bfd_h_getx64, (bfd_byte *));
|
||
SDEF (void, bfd_h_putx64, (bfd_vma, bfd_byte *));
|
||
SDEF (bfd_vma, bfd_h_getx32, (bfd_byte *));
|
||
SDEF (void, bfd_h_putx32, (bfd_vma, bfd_byte *));
|
||
SDEF (bfd_vma, bfd_h_getx16, (bfd_byte *));
|
||
SDEF (void, bfd_h_putx16, (bfd_vma, bfd_byte *));
|
||
|
||
/*
|
||
Format dependent routines, these turn into vectors of entry points
|
||
within the target vector structure; one for each format to check.
|
||
|
||
Check the format of a file being read. Return bfd_target * or zero.
|
||
*/
|
||
|
||
SDEF_FMT (struct bfd_target *, _bfd_check_format, (bfd *));
|
||
|
||
/*
|
||
Set the format of a file being written.
|
||
*/
|
||
|
||
SDEF_FMT (boolean, _bfd_set_format, (bfd *));
|
||
|
||
/*
|
||
Write cached information into a file being written, at bfd_close.
|
||
*/
|
||
|
||
SDEF_FMT (boolean, _bfd_write_contents, (bfd *));
|
||
|
||
/*
|
||
The following functions are defined in @code{JUMP_TABLE}. The idea is
|
||
that the back end writer of @code{foo} names all the routines
|
||
@code{foo_}@var{entry_point}, @code{JUMP_TABLE} will built the entries
|
||
in this structure in the right order.
|
||
|
||
Core file entry points
|
||
*/
|
||
|
||
SDEF (char *, _core_file_failing_command, (bfd *));
|
||
SDEF (int, _core_file_failing_signal, (bfd *));
|
||
SDEF (boolean, _core_file_matches_executable_p, (bfd *, bfd *));
|
||
|
||
/*
|
||
Archive entry points
|
||
*/
|
||
|
||
SDEF (boolean, _bfd_slurp_armap, (bfd *));
|
||
SDEF (boolean, _bfd_slurp_extended_name_table, (bfd *));
|
||
SDEF (void, _bfd_truncate_arname, (bfd *, CONST char *, char *));
|
||
SDEF (boolean, write_armap, (bfd *arch,
|
||
unsigned int elength,
|
||
struct orl *map,
|
||
int orl_count,
|
||
int stridx));
|
||
|
||
/*
|
||
Standard stuff.
|
||
*/
|
||
|
||
SDEF (boolean, _close_and_cleanup, (bfd *));
|
||
SDEF (boolean, _bfd_set_section_contents, (bfd *, sec_ptr, PTR,
|
||
file_ptr, bfd_size_type));
|
||
SDEF (boolean, _bfd_get_section_contents, (bfd *, sec_ptr, PTR,
|
||
file_ptr, bfd_size_type));
|
||
SDEF (boolean, _new_section_hook, (bfd *, sec_ptr));
|
||
|
||
/*
|
||
Symbols and reloctions
|
||
*/
|
||
|
||
SDEF (unsigned int, _get_symtab_upper_bound, (bfd *));
|
||
SDEF (unsigned int, _bfd_canonicalize_symtab,
|
||
(bfd *, struct symbol_cache_entry **));
|
||
SDEF (unsigned int, _get_reloc_upper_bound, (bfd *, sec_ptr));
|
||
SDEF (unsigned int, _bfd_canonicalize_reloc, (bfd *, sec_ptr, arelent **,
|
||
struct symbol_cache_entry**));
|
||
SDEF (struct symbol_cache_entry *, _bfd_make_empty_symbol, (bfd *));
|
||
SDEF (void, _bfd_print_symbol, (bfd *, PTR, struct symbol_cache_entry *,
|
||
bfd_print_symbol_enum_type));
|
||
#define bfd_print_symbol(b,p,s,e) BFD_SEND(b, _bfd_print_symbol, (b,p,s,e))
|
||
SDEF (alent *, _get_lineno, (bfd *, struct symbol_cache_entry *));
|
||
|
||
SDEF (boolean, _bfd_set_arch_mach, (bfd *, enum bfd_architecture,
|
||
unsigned long));
|
||
|
||
SDEF (bfd *, openr_next_archived_file, (bfd *arch, bfd *prev));
|
||
SDEF (boolean, _bfd_find_nearest_line,
|
||
(bfd *abfd, struct sec *section,
|
||
struct symbol_cache_entry **symbols,bfd_vma offset,
|
||
CONST char **file, CONST char **func, unsigned int *line));
|
||
SDEF (int, _bfd_stat_arch_elt, (bfd *, struct stat *));
|
||
|
||
SDEF (int, _bfd_sizeof_headers, (bfd *, boolean));
|
||
|
||
SDEF (void, _bfd_debug_info_start, (bfd *));
|
||
SDEF (void, _bfd_debug_info_end, (bfd *));
|
||
SDEF (void, _bfd_debug_info_accumulate, (bfd *, struct sec *));
|
||
|
||
/*
|
||
Special entry points for gdb to swap in coff symbol table parts
|
||
*/
|
||
|
||
SDEF(void, _bfd_coff_swap_aux_in,(
|
||
bfd *abfd ,
|
||
PTR ext,
|
||
int type,
|
||
int class ,
|
||
PTR in));
|
||
|
||
SDEF(void, _bfd_coff_swap_sym_in,(
|
||
bfd *abfd ,
|
||
PTR ext,
|
||
PTR in));
|
||
|
||
SDEF(void, _bfd_coff_swap_lineno_in, (
|
||
bfd *abfd,
|
||
PTR ext,
|
||
PTR in));
|
||
|
||
} bfd_target;
|
||
|
||
/*
|
||
|
||
*i bfd_find_target
|
||
Returns a pointer to the transfer vector for the object target
|
||
named target_name. If target_name is NULL, chooses the one in the
|
||
environment variable GNUTARGET; if that is null or not defined then
|
||
the first entry in the target list is chosen. Passing in the
|
||
string "default" or setting the environment variable to "default"
|
||
will cause the first entry in the target list to be returned,
|
||
and "target_defaulted" will be set in the bfd. This causes
|
||
bfd_check_format to loop over all the targets to find the one
|
||
that matches the file being read.
|
||
*/
|
||
PROTO(bfd_target *, bfd_find_target,(CONST char *, bfd *));
|
||
|
||
/*
|
||
|
||
*i bfd_target_list
|
||
This function returns a freshly malloced NULL-terminated vector of the
|
||
names of all the valid bfd targets. Do not modify the names
|
||
*/
|
||
PROTO(CONST char **,bfd_target_list,());
|
||
|
||
/*
|
||
|
||
--------------------------------END FROM targets.c*/
|
||
|
||
/* FROM format.c*/
|
||
/* ------------------------------START FROM format.c
|
||
|
||
*i bfd_check_format
|
||
This routine is supplied a bfd and a format. It attempts to verify if
|
||
the file attatched to the bfd is indeed compatible with the format
|
||
specified (ie, one of @code{bfd_object}, @code{bfd_archive} or
|
||
@code{bfd_core}).
|
||
|
||
If the bfd has been set to a specific @var{target} before the call,
|
||
only the named target and format combination will be checked. If the
|
||
target has not been set, or has been set to @code{default} then all
|
||
the known target backends will be interrogated to determine a match.
|
||
|
||
The function returns @code{true} on success, otherwise @code{false}
|
||
with one of the following error codes:
|
||
@table @code
|
||
@item
|
||
invalid_operation
|
||
if @code{format} is not one of @code{bfd_object}, @code{bfd_archive}
|
||
or @code{bfd_core}.
|
||
@item system_call_error
|
||
if an error occured during a read - even some file mismatches can
|
||
cause system_call_errros
|
||
@item file_not_recognised
|
||
none of the backends recognised the file format
|
||
@item file_ambiguously_recognized
|
||
more than one backend recognised the file format.
|
||
@end table
|
||
*/
|
||
PROTO(boolean, bfd_check_format, (bfd *abfd, bfd_format format));
|
||
|
||
/*
|
||
|
||
*i bfd_set_format
|
||
This function sets the file format of the supplied bfd to the format
|
||
requested. If the target set in the bfd does not support the format
|
||
requested, the format is illegal or the bfd is not open for writing
|
||
than an error occurs.
|
||
*/
|
||
PROTO(boolean,bfd_set_format,(bfd *, bfd_format));
|
||
|
||
/*
|
||
|
||
*i bfd_format_string
|
||
This function takes one argument, and enumerated type (bfd_format) and
|
||
returns a pointer to a const string "invalid", "object", "archive",
|
||
"core" or "unknown" depending upon the value of the enumeration.
|
||
*/
|
||
PROTO(CONST char *, bfd_format_string, (bfd_format));
|
||
|
||
/*
|
||
|
||
--------------------------------END FROM format.c*/
|
||
|
||
#endif
|